Who can help introduce the water resources in Yantai?

The inland river network in the city is relatively developed, and there are many small and medium-sized rivers. There are 1 and 2 1 rivers with a length of more than 5 kilometers, among which there are 7 rivers with a basin area of more than 300 square kilometers, namely, Wulong River, Dagu River, Dagujia River, Wanghe River, Hejie River, Huangshui River and Xin 'anjiang River. The main rivers are divided by the "Jiaodong Roof" formed by Kunyu Mountain, Yashan Mountain, Ai Shan Mountain, Luoshan Mountain and Daze Mountain, and flow into the sea from north to south. The Wulong River and Dagu River flow southward into the Yellow Sea. Dagujia River and Xin 'anjiang River flow northward into the Yellow Sea; Huang Shuihe, He Jie and Wanghe rivers flow into the Bohai Sea. It is characterized by large river bed gradient, short source and rapid flow, and it belongs to the source river of monsoon rainfall. The alluvial plain is thick and fertile, rich in apples, cherries, pears and grapes.

[Edit this paragraph] Climate characteristics

Yantai is surrounded by mountains and seas, with pleasant climate, no severe cold in winter and no heat in summer. It belongs to warm temperate monsoon climate, with an average annual temperature of about 12 degrees Celsius. It is a famous summer resort and leisure resort in northern China.

[Edit this paragraph] Overview of the sea area

Island distribution

Yantai has a coastline of 909 kilometers, bordering the Bohai Sea in the north and northwest, and the Yellow Sea in the northeast and south. There are 63 islands with large and small bedrock, like bright pearls embedded in the sea. Zhifu Island, Nanchangshan Island and Mayang Island have a large area, and there are 15 islands with residents, namely Nanchangshan Island, Beihangshan Island, Daheishan Island, Xiaoheishan Island, Miaodao Island, Zhaiji Island, Daqin Island, Qinxiao Island, Nanhuangcheng Island and Beihuangcheng Island in Changdao County.

Seawater characteristics

The change of surface water temperature along the coast is more obvious and greater than that in the open sea, and the annual average water temperature is between 1 1 ~ 14℃. The annual average surface salinity of seawater is about 28 ~ 3 1 ‰. The coastal area from Laizhou to Longkou is irregular and the coastal area from Longkou to Muping and Haiyang is regular.